Regeneron Pharmaceuticals Inc (REGN) — Price History
As of 2026-08-07 — refreshed nightly from the Closelook data lake. Diary readings, not advice.
Daily prices
| Date | Open | High | Low | Close | Chg % | Volume |
|---|---|---|---|---|---|---|
| 2026-08-07 | 774.47 | 785.99 | 767.17 | 784.36 | +1.59% | 837,600 |
| 2026-08-06 | 777.85 | 780.95 | 762.79 | 772.11 | +0.46% | 783,900 |
| 2026-08-05 | 767.98 | 782.59 | 763.31 | 768.58 | +1.04% | 532,400 |
| 2026-08-04 | 753.76 | 763.54 | 747.00 | 760.66 | +0.19% | 817,300 |
| 2026-08-03 | 769.54 | 772.75 | 756.44 | 759.24 | -0.44% | 842,600 |
| 2026-07-31 | 726.69 | 764.75 | 724.79 | 762.63 | +3.29% | 1,158,300 |
| 2026-07-30 | 701.90 | 740.00 | 694.98 | 738.34 | +6.17% | 1,460,700 |
| 2026-07-29 | 699.38 | 702.60 | 691.00 | 695.42 | +0.03% | 1,022,100 |
| 2026-07-28 | 676.93 | 696.74 | 676.46 | 695.18 | +4.20% | 900,200 |
| 2026-07-27 | 661.77 | 678.12 | 659.53 | 667.17 | +1.70% | 650,800 |
| 2026-07-24 | 658.29 | 667.50 | 654.05 | 656.01 | +0.63% | 708,400 |
| 2026-07-23 | 646.48 | 655.20 | 637.80 | 651.91 | +0.11% | 1,129,400 |
| 2026-07-22 | 676.43 | 676.80 | 648.90 | 651.18 | -3.56% | 872,200 |
| 2026-07-21 | 672.55 | 678.67 | 666.87 | 675.19 | +0.45% | 529,400 |
| 2026-07-20 | 674.72 | 681.74 | 669.88 | 672.15 | -0.67% | 624,800 |
| 2026-07-17 | 676.05 | 691.13 | 672.31 | 676.69 | -0.33% | 648,300 |
| 2026-07-16 | 666.28 | 680.29 | 661.38 | 678.94 | +2.18% | 730,100 |
| 2026-07-15 | 656.11 | 669.10 | 648.66 | 664.45 | +1.27% | 555,400 |
| 2026-07-14 | 658.00 | 663.10 | 653.31 | 656.12 | -1.05% | 478,000 |
| 2026-07-13 | 661.63 | 665.60 | 655.11 | 663.09 | -0.22% | 606,300 |
| 2026-07-10 | 670.06 | 676.66 | 658.50 | 664.52 | -0.51% | 581,700 |
| 2026-07-09 | 660.80 | 669.16 | 660.80 | 667.95 | +0.76% | 672,500 |
| 2026-07-08 | 669.11 | 670.35 | 661.43 | 662.88 | -1.97% | 746,800 |
| 2026-07-07 | 663.18 | 677.92 | 659.02 | 676.23 | +4.07% | 918,700 |
| 2026-07-06 | 657.96 | 657.96 | 637.72 | 649.81 | -0.68% | 714,300 |
| 2026-07-02 | 630.52 | 654.94 | 625.70 | 654.27 | +4.73% | 1,071,600 |
| 2026-07-01 | 629.90 | 632.85 | 623.89 | 624.72 | +0.19% | 1,170,600 |
| 2026-06-30 | 630.95 | 634.06 | 622.29 | 623.54 | -1.31% | 820,900 |
| 2026-06-29 | 635.99 | 638.30 | 626.86 | 631.81 | -0.17% | 734,400 |
| 2026-06-26 | 623.64 | 638.76 | 623.44 | 632.90 | +2.06% | 1,213,600 |
| 2026-06-25 | 623.16 | 634.31 | 619.70 | 620.14 | -0.53% | 696,800 |
| 2026-06-24 | 621.63 | 631.18 | 619.27 | 623.43 | +0.87% | 839,900 |
| 2026-06-23 | 607.92 | 621.79 | 607.92 | 618.03 | +0.90% | 1,279,700 |
| 2026-06-22 | 604.46 | 613.56 | 594.90 | 612.50 | +0.42% | 1,604,300 |
| 2026-06-18 | 612.07 | 616.24 | 598.19 | 609.94 | +0.33% | 2,609,100 |
| 2026-06-17 | 615.16 | 620.00 | 602.13 | 607.93 | -1.11% | 1,299,500 |
| 2026-06-16 | 615.18 | 617.60 | 608.21 | 614.73 | -0.04% | 1,007,500 |
| 2026-06-15 | 613.35 | 615.95 | 608.59 | 614.98 | +0.46% | 815,900 |
| 2026-06-12 | 613.11 | 616.55 | 605.01 | 612.14 | +0.11% | 717,700 |
| 2026-06-11 | 604.31 | 618.10 | 603.57 | 611.48 | +1.63% | 943,100 |
| 2026-06-10 | 619.07 | 619.26 | 601.22 | 601.65 | -2.36% | 816,100 |
| 2026-06-09 | 624.17 | 628.90 | 610.95 | 616.18 | +0.79% | 1,190,600 |
| 2026-06-08 | 638.04 | 638.95 | 608.98 | 611.34 | -3.79% | 1,259,200 |
| 2026-06-05 | 632.26 | 640.82 | 632.09 | 635.45 | +1.07% | 975,800 |
| 2026-06-04 | 628.07 | 633.89 | 621.11 | 628.73 | +1.58% | 974,700 |
| 2026-06-03 | 600.79 | 625.00 | 599.00 | 618.95 | +2.66% | 986,700 |
| 2026-06-02 | 596.52 | 604.63 | 591.52 | 602.92 | +0.38% | 1,066,700 |
| 2026-06-01 | 607.54 | 614.00 | 598.80 | 600.66 | -2.30% | 1,079,900 |
| 2026-05-29 | 620.11 | 624.47 | 609.77 | 614.78 | -1.08% | 2,187,500 |
| 2026-05-28 | 630.15 | 631.73 | 620.35 | 621.52 | -0.99% | 1,234,400 |
| 2026-05-27 | 634.80 | 638.06 | 625.00 | 627.74 | -1.08% | 1,913,500 |
| 2026-05-26 | 642.45 | 648.50 | 632.68 | 634.62 | -0.67% | 889,800 |
| 2026-05-22 | 639.24 | 644.12 | 632.72 | 638.88 | -0.58% | 994,900 |
| 2026-05-21 | 645.00 | 650.32 | 639.81 | 642.59 | -1.10% | 1,178,500 |
| 2026-05-20 | 634.32 | 651.00 | 633.60 | 649.76 | +3.09% | 1,165,600 |
| 2026-05-19 | 630.49 | 639.99 | 616.02 | 630.30 | +0.10% | 1,445,100 |
| 2026-05-18 | 615.93 | 633.00 | 610.60 | 629.68 | -9.82% | 2,996,600 |
| 2026-05-15 | 712.69 | 717.89 | 693.70 | 698.25 | -2.05% | 728,000 |
| 2026-05-14 | 719.00 | 722.51 | 710.06 | 712.87 | -0.97% | 767,200 |
| 2026-05-13 | 721.29 | 730.59 | 709.51 | 719.88 | -0.49% | 879,300 |
| 2026-05-12 | 716.39 | 725.60 | 710.02 | 723.41 | +1.49% | 824,300 |
| 2026-05-11 | 714.99 | 727.39 | 701.99 | 712.77 | -0.30% | 1,227,200 |
| 2026-05-08 | 709.29 | 717.99 | 708.36 | 714.89 | +0.82% | 589,000 |
| 2026-05-07 | 718.50 | 725.31 | 707.43 | 709.10 | -1.66% | 774,600 |
| 2026-05-06 | 703.33 | 726.16 | 702.50 | 721.05 | +2.67% | 739,900 |
| 2026-05-05 | 710.73 | 715.62 | 699.23 | 702.27 | -0.98% | 642,700 |
| 2026-05-04 | 702.56 | 711.55 | 699.75 | 709.21 | +1.11% | 554,100 |
| 2026-05-01 | 703.02 | 714.48 | 700.26 | 701.42 | -0.80% | 729,100 |
| 2026-04-30 | 693.08 | 708.44 | 688.95 | 707.06 | +3.02% | 1,096,500 |
| 2026-04-29 | 705.11 | 708.80 | 668.85 | 686.36 | -6.21% | 1,835,000 |
| 2026-04-28 | 751.37 | 754.00 | 730.90 | 731.77 | -1.70% | 569,000 |
| 2026-04-27 | 745.47 | 756.40 | 743.61 | 744.44 | -0.95% | 603,200 |
| 2026-04-24 | 760.00 | 761.96 | 736.71 | 751.57 | -1.89% | 809,500 |
| 2026-04-23 | 750.99 | 767.21 | 747.26 | 766.02 | +2.60% | 928,700 |
| 2026-04-22 | 751.48 | 755.78 | 740.47 | 746.58 | -0.10% | 901,900 |
| 2026-04-21 | 746.20 | 751.54 | 734.12 | 747.36 | -0.27% | 707,400 |
| 2026-04-20 | 750.00 | 755.59 | 744.00 | 749.41 | -0.15% | 493,800 |
| 2026-04-17 | 754.74 | 758.61 | 746.91 | 750.57 | +0.61% | 513,000 |
| 2026-04-16 | 749.56 | 756.00 | 742.69 | 746.00 | -1.05% | 505,000 |
| 2026-04-15 | 758.67 | 760.58 | 739.12 | 753.93 | -0.21% | 571,100 |
| 2026-04-14 | 744.97 | 757.68 | 743.71 | 755.51 | +1.21% | 637,800 |
| 2026-04-13 | 747.74 | 756.90 | 737.34 | 746.46 | -0.32% | 747,000 |
| 2026-04-10 | 771.48 | 771.48 | 739.09 | 748.87 | -2.47% | 751,300 |
| 2026-04-09 | 764.15 | 772.45 | 761.50 | 767.85 | -0.99% | 596,700 |
| 2026-04-08 | 765.26 | 775.63 | 755.99 | 775.53 | +2.01% | 580,400 |
| 2026-04-07 | 758.40 | 761.91 | 747.76 | 760.27 | -0.36% | 620,900 |
| 2026-04-06 | 766.83 | 768.80 | 758.49 | 763.04 | +0.16% | 460,400 |
| 2026-04-02 | 767.04 | 770.11 | 745.00 | 761.85 | -1.98% | 1,000,600 |
| 2026-04-01 | 775.00 | 781.21 | 769.97 | 777.25 | +0.60% | 627,400 |
| 2026-03-31 | 757.47 | 774.26 | 755.80 | 772.64 | +3.12% | 642,600 |
| 2026-03-30 | 743.83 | 757.68 | 741.47 | 749.29 | +1.57% | 630,400 |
| 2026-03-27 | 756.65 | 759.47 | 736.64 | 737.71 | -2.51% | 492,200 |
| 2026-03-26 | 749.40 | 761.73 | 747.77 | 756.73 | +0.97% | 488,600 |
| 2026-03-25 | 744.67 | 757.98 | 744.02 | 749.47 | +1.05% | 553,100 |
| 2026-03-24 | 728.51 | 743.17 | 727.96 | 741.69 | +0.70% | 507,900 |
| 2026-03-23 | 745.00 | 750.00 | 735.00 | 736.53 | +0.50% | 535,900 |
| 2026-03-20 | 738.17 | 744.85 | 728.64 | 732.87 | -0.62% | 1,359,900 |
| 2026-03-19 | 744.50 | 750.32 | 727.88 | 737.45 | -0.90% | 628,300 |
| 2026-03-18 | 751.22 | 757.60 | 734.56 | 744.12 | -1.97% | 672,500 |
| 2026-03-17 | 763.53 | 771.23 | 755.64 | 759.05 | +0.28% | 437,000 |
| 2026-03-16 | 750.00 | 763.30 | 747.01 | 756.91 | +1.49% | 396,200 |
| 2026-03-13 | 754.55 | 758.98 | 741.89 | 745.77 | -0.11% | 438,297 |
| 2026-03-12 | 764.06 | 766.00 | 744.00 | 746.61 | -3.62% | 630,400 |
| 2026-03-11 | 769.17 | 783.12 | 765.00 | 774.66 | +0.34% | 405,200 |
| 2026-03-10 | 781.67 | 788.69 | 771.34 | 772.03 | -1.22% | 473,422 |
| 2026-03-09 | 759.86 | 783.70 | 754.91 | 781.60 | +2.86% | 697,070 |
| 2026-03-06 | 755.01 | 762.40 | 746.66 | 759.86 | -0.66% | 561,900 |
| 2026-03-05 | 780.00 | 781.99 | 760.01 | 764.93 | -2.87% | 657,500 |
| 2026-03-04 | 767.05 | 791.60 | 764.24 | 787.50 | +2.72% | 641,400 |
| 2026-03-03 | 781.01 | 794.77 | 764.49 | 766.66 | -3.05% | 637,200 |
| 2026-03-02 | 771.10 | 793.16 | 769.63 | 790.81 | +1.17% | 793,100 |
| 2026-02-27 | 760.91 | 786.68 | 760.91 | 781.67 | +1.41% | 726,400 |
| 2026-02-26 | 784.28 | 784.50 | 753.79 | 770.79 | -1.72% | 772,700 |
| 2026-02-25 | 774.13 | 791.11 | 771.43 | 784.28 | +1.57% | 750,900 |
| 2026-02-24 | 780.47 | 792.67 | 768.75 | 772.19 | -1.89% | 628,700 |
| 2026-02-23 | 777.58 | 792.16 | 777.58 | 787.04 | +0.95% | 510,500 |
| 2026-02-20 | 775.00 | 781.46 | 770.00 | 779.67 | -0.35% | 615,100 |
| 2026-02-19 | 790.00 | 790.00 | 773.31 | 782.38 | -1.23% | 504,800 |
| 2026-02-18 | 793.53 | 797.00 | 786.79 | 792.16 | -0.17% | 675,900 |
| 2026-02-17 | 803.48 | 815.00 | 783.62 | 793.53 | -1.20% | 747,100 |
| 2026-02-13 | 788.92 | 806.18 | 785.00 | 803.17 | +2.49% | 974,700 |
| 2026-02-12 | 784.80 | 796.72 | 774.72 | 783.65 | +0.60% | 814,300 |
| 2026-02-11 | 750.85 | 781.42 | 745.07 | 778.97 | +3.19% | 1,123,600 |
| 2026-02-10 | 779.73 | 781.40 | 753.10 | 754.91 | -3.25% | 792,600 |
| 2026-02-09 | 783.17 | 790.00 | 775.50 | 780.28 | -0.67% | 586,800 |
| 2026-02-06 | 769.63 | 786.99 | 764.78 | 785.51 | +2.46% | 671,400 |
| 2026-02-05 | 777.83 | 790.00 | 760.00 | 766.63 | -1.09% | 976,500 |
| 2026-02-04 | 765.80 | 779.78 | 765.21 | 775.06 | +2.09% | 952,000 |
| 2026-02-03 | 745.53 | 773.72 | 742.74 | 759.18 | +0.55% | 768,700 |
| 2026-02-02 | 732.92 | 763.56 | 731.51 | 755.02 | +1.83% | 693,000 |
| 2026-01-30 | 753.96 | 774.37 | 735.61 | 741.45 | -1.07% | 1,317,500 |
| 2026-01-29 | 755.73 | 755.73 | 742.80 | 749.44 | -0.22% | 925,800 |
| 2026-01-28 | 765.15 | 766.99 | 747.57 | 751.13 | -2.61% | 827,900 |
| 2026-01-27 | 762.47 | 776.25 | 761.50 | 771.25 | +1.13% | 645,800 |
| 2026-01-26 | 750.09 | 767.30 | 750.09 | 762.65 | +1.21% | 934,200 |
| 2026-01-23 | 757.31 | 762.00 | 747.30 | 753.55 | -0.26% | 721,000 |
| 2026-01-22 | 750.34 | 765.00 | 747.37 | 755.51 | +0.82% | 765,400 |
| 2026-01-21 | 736.71 | 750.00 | 735.00 | 749.33 | +2.12% | 788,400 |
| 2026-01-20 | 729.40 | 737.87 | 718.38 | 733.78 | +0.10% | 789,100 |
| 2026-01-16 | 749.09 | 749.09 | 726.43 | 733.04 | -1.20% | 1,682,400 |
| 2026-01-15 | 754.85 | 756.50 | 737.00 | 741.92 | -1.62% | 865,600 |
| 2026-01-14 | 760.58 | 766.64 | 753.01 | 754.14 | -0.63% | 668,900 |
| 2026-01-13 | 765.16 | 765.99 | 743.94 | 758.91 | -1.18% | 946,500 |
| 2026-01-12 | 810.00 | 811.09 | 765.08 | 768.00 | -3.58% | 1,321,100 |
| 2026-01-09 | 802.97 | 821.11 | 790.88 | 796.55 | -0.56% | 711,500 |
| 2026-01-08 | 805.81 | 816.99 | 800.68 | 801.01 | -1.39% | 1,049,300 |
| 2026-01-07 | 786.18 | 814.10 | 780.10 | 812.27 | +4.60% | 1,264,700 |
| 2026-01-06 | 764.35 | 787.66 | 763.20 | 776.54 | +1.74% | 935,000 |
| 2026-01-05 | 769.72 | 771.99 | 753.20 | 763.23 | -1.68% | 835,700 |
| 2026-01-02 | 774.25 | 779.75 | 765.77 | 776.31 | +0.58% | 464,800 |
| 2025-12-31 | 772.00 | 775.00 | 769.17 | 771.87 | -0.27% | 354,800 |
| 2025-12-30 | 776.30 | 777.77 | 770.30 | 773.94 | -0.84% | 383,200 |
| 2025-12-29 | 780.56 | 785.05 | 774.60 | 780.50 | -0.57% | 545,100 |
| 2025-12-26 | 783.79 | 788.01 | 778.04 | 784.97 | +0.16% | 321,000 |
| 2025-12-24 | 787.99 | 792.77 | 783.61 | 783.71 | -0.19% | 267,200 |
| 2025-12-23 | 777.36 | 792.75 | 777.00 | 785.17 | +0.75% | 832,000 |
| 2025-12-22 | 765.84 | 783.60 | 765.09 | 779.36 | +1.48% | 818,000 |
| 2025-12-19 | 753.72 | 773.85 | 748.18 | 767.96 | +2.57% | 2,335,900 |
| 2025-12-18 | 747.54 | 752.84 | 739.23 | 748.71 | -0.14% | 1,057,600 |
| 2025-12-17 | 746.55 | 751.99 | 743.33 | 749.79 | +0.46% | 765,900 |
| 2025-12-16 | 752.57 | 757.35 | 734.72 | 746.36 | -0.83% | 713,200 |
| 2025-12-15 | 748.85 | 756.67 | 746.38 | 752.62 | +1.53% | 932,800 |
| 2025-12-12 | 741.59 | 746.05 | 734.38 | 741.29 | -0.74% | 804,800 |
| 2025-12-11 | 726.08 | 753.61 | 726.08 | 746.80 | +2.84% | 1,153,900 |
| 2025-12-10 | 695.06 | 728.00 | 692.50 | 726.21 | +4.86% | 1,316,500 |
| 2025-12-09 | 705.11 | 711.15 | 691.86 | 692.58 | -1.52% | 604,400 |
| 2025-12-08 | 723.69 | 724.13 | 701.75 | 703.26 | -2.10% | 1,005,900 |
| 2025-12-05 | 723.00 | 736.15 | 717.26 | 718.36 | -0.61% | 798,300 |
| 2025-12-04 | 732.45 | 735.00 | 721.22 | 722.80 | -0.12% | 1,067,100 |
| 2025-12-03 | 730.36 | 744.23 | 720.07 | 723.67 | -2.47% | 1,238,500 |
| 2025-12-02 | 742.12 | 747.00 | 731.00 | 742.00 | -1.08% | 924,600 |
| 2025-12-01 | 775.60 | 779.92 | 748.15 | 750.11 | -3.86% | 992,000 |
| 2025-11-28 | 784.70 | 788.98 | 779.50 | 780.19 | -0.56% | 510,400 |
| 2025-11-26 | 785.72 | 790.98 | 777.00 | 784.61 | -0.34% | 871,700 |
| 2025-11-25 | 764.88 | 790.57 | 760.01 | 787.32 | +3.40% | 1,200,400 |
| 2025-11-24 | 759.05 | 773.13 | 756.64 | 761.45 | +0.73% | 1,554,900 |
| 2025-11-21 | 736.01 | 764.09 | 735.74 | 755.90 | +2.56% | 1,427,700 |
| 2025-11-20 | 725.00 | 753.51 | 720.02 | 737.00 | +4.87% | 2,296,800 |
| 2025-11-19 | 727.81 | 727.81 | 702.63 | 702.75 | -3.11% | 1,383,600 |
| 2025-11-18 | 702.51 | 727.97 | 699.22 | 725.34 | +2.99% | 1,368,700 |
| 2025-11-17 | 693.34 | 711.88 | 692.29 | 704.31 | +1.56% | 1,132,900 |
| 2025-11-14 | 697.19 | 699.27 | 685.95 | 693.50 | -0.21% | 907,000 |
| 2025-11-13 | 683.00 | 713.58 | 679.93 | 694.99 | +1.95% | 1,505,300 |
| 2025-11-12 | 678.89 | 690.78 | 672.67 | 681.72 | +1.06% | 1,208,300 |
| 2025-11-11 | 651.48 | 676.33 | 651.38 | 674.55 | +3.03% | 977,200 |
| 2025-11-10 | 656.00 | 665.99 | 653.19 | 654.74 | -0.42% | 824,800 |
| 2025-11-07 | 650.35 | 658.21 | 640.99 | 657.53 | +1.65% | 782,800 |
| 2025-11-06 | 640.83 | 657.00 | 640.83 | 646.87 | +0.42% | 916,600 |
| 2025-11-05 | 631.10 | 646.89 | 628.00 | 644.19 | +2.58% | 724,300 |
| 2025-11-04 | 643.78 | 646.22 | 625.14 | 628.00 | -2.22% | 1,030,900 |
| 2025-11-03 | 657.46 | 657.46 | 627.50 | 642.25 | -1.47% | 810,300 |
| 2025-10-31 | 649.45 | 660.00 | 645.00 | 651.80 | -0.34% | 797,900 |
| 2025-10-30 | 645.56 | 664.00 | 643.92 | 654.04 | +0.17% | 1,120,700 |
| 2025-10-29 | 650.41 | 659.98 | 637.66 | 652.91 | -0.24% | 1,751,500 |
| 2025-10-28 | 612.02 | 655.70 | 605.03 | 654.48 | +11.82% | 2,126,800 |
| 2025-10-27 | 580.50 | 586.15 | 575.93 | 585.31 | +1.27% | 1,246,100 |
| 2025-10-24 | 579.65 | 582.70 | 576.20 | 577.95 | +0.39% | 875,400 |
| 2025-10-23 | 579.68 | 584.00 | 572.75 | 575.69 | -1.55% | 778,800 |
| 2025-10-22 | 580.21 | 588.71 | 578.60 | 584.74 | +0.93% | 691,200 |
| 2025-10-21 | 574.60 | 582.41 | 572.82 | 579.34 | +0.45% | 651,600 |
| 2025-10-20 | 579.41 | 582.65 | 574.23 | 576.77 | -0.22% | 639,100 |
| 2025-10-17 | 570.35 | 579.04 | 566.11 | 578.05 | +1.56% | 745,700 |
| 2025-10-16 | 583.01 | 589.08 | 564.00 | 569.17 | -1.26% | 842,200 |
| 2025-10-15 | 575.03 | 584.87 | 569.02 | 576.42 | +0.67% | 927,700 |
| 2025-10-14 | 556.92 | 576.18 | 553.87 | 572.60 | +2.67% | 1,010,600 |
| 2025-10-13 | 551.50 | 563.77 | 541.00 | 557.73 | -1.22% | 1,426,400 |
| 2025-10-10 | 569.29 | 577.17 | 555.54 | 564.63 | -0.92% | 1,495,000 |
| 2025-10-09 | 569.02 | 574.72 | 563.51 | 569.90 | +1.07% | 853,300 |
| 2025-10-08 | 584.01 | 605.00 | 560.97 | 563.86 | -3.32% | 1,415,800 |
| 2025-10-07 | 587.59 | 591.45 | 578.42 | 583.24 | -0.38% | 656,400 |
| 2025-10-06 | 602.00 | 603.65 | 584.41 | 585.48 | -2.42% | 1,072,400 |
| 2025-10-03 | 602.09 | 618.01 | 599.87 | 600.00 | +0.00% | 1,154,500 |
| 2025-10-02 | 600.42 | 605.41 | 596.60 | 600.00 | +0.01% | 1,096,500 |
| 2025-10-01 | 570.87 | 615.39 | 569.99 | 599.94 | +6.70% | 2,083,200 |
| 2025-09-30 | 560.58 | 574.04 | 555.00 | 562.27 | +0.27% | 1,662,500 |
| 2025-09-29 | 563.90 | 564.91 | 557.34 | 560.75 | -0.56% | 922,400 |
| 2025-09-26 | 562.00 | 564.61 | 550.71 | 563.90 | +1.51% | 838,600 |
| 2025-09-25 | 577.30 | 579.00 | 549.20 | 555.51 | -3.72% | 1,394,200 |
| 2025-09-24 | 567.89 | 577.98 | 566.00 | 576.98 | +1.60% | 777,300 |
| 2025-09-23 | 580.00 | 582.00 | 565.45 | 567.89 | -4.67% | 1,362,200 |
| 2025-09-22 | 593.00 | 600.75 | 588.67 | 595.68 | +0.62% | 904,900 |
| 2025-09-19 | 602.54 | 603.47 | 591.00 | 591.99 | -1.12% | 2,178,000 |
| 2025-09-18 | 589.52 | 600.00 | 583.92 | 598.71 | +2.26% | 1,267,000 |
| 2025-09-17 | 576.31 | 587.67 | 576.31 | 585.50 | +1.82% | 921,500 |
| 2025-09-16 | 573.43 | 579.40 | 567.30 | 575.06 | +0.43% | 707,900 |
| 2025-09-15 | 558.54 | 573.69 | 558.54 | 572.59 | +2.25% | 995,700 |
| 2025-09-12 | 567.34 | 570.00 | 559.45 | 560.00 | -1.44% | 602,600 |
| 2025-09-11 | 555.81 | 570.76 | 555.81 | 568.20 | +2.23% | 868,200 |
| 2025-09-10 | 555.21 | 560.00 | 552.98 | 555.83 | -0.13% | 874,700 |
| 2025-09-09 | 557.00 | 563.57 | 554.80 | 556.53 | -0.34% | 873,200 |
| 2025-09-08 | 571.20 | 571.20 | 552.81 | 558.44 | -2.61% | 1,250,400 |
| 2025-09-05 | 565.15 | 577.75 | 565.00 | 573.38 | +1.09% | 960,400 |
| 2025-09-04 | 568.01 | 581.98 | 559.62 | 567.22 | +0.61% | 1,124,300 |
| 2025-09-03 | 581.99 | 588.70 | 562.79 | 563.80 | -2.44% | 1,118,500 |
| 2025-09-02 | 580.54 | 585.49 | 570.35 | 577.90 | -0.48% | 1,020,200 |
| 2025-08-29 | 577.15 | 581.25 | 575.89 | 580.70 | +0.19% | 574,300 |
| 2025-08-28 | 586.43 | 590.96 | 575.04 | 579.61 | -1.25% | 616,600 |
| 2025-08-27 | 591.87 | 597.02 | 585.50 | 586.96 | -0.12% | 584,100 |
| 2025-08-26 | 573.00 | 588.10 | 567.08 | 587.65 | +2.67% | 1,614,400 |
| 2025-08-25 | 591.06 | 594.88 | 572.25 | 572.38 | -2.90% | 880,900 |
| 2025-08-22 | 602.35 | 610.45 | 585.50 | 589.48 | -1.45% | 1,439,400 |
| 2025-08-21 | 586.87 | 605.18 | 585.10 | 598.16 | +1.21% | 1,010,000 |
| 2025-08-20 | 572.33 | 596.92 | 570.39 | 591.01 | +3.36% | 1,298,500 |
| 2025-08-19 | 575.30 | 581.69 | 570.80 | 571.78 | -0.37% | 854,600 |
| 2025-08-18 | 582.09 | 585.00 | 573.81 | 573.91 | -1.12% | 769,400 |
| 2025-08-15 | 577.96 | 581.95 | 570.84 | 580.41 | +2.55% | 1,122,200 |
| 2025-08-14 | 560.90 | 573.49 | 558.00 | 565.97 | +0.79% | 976,300 |
| 2025-08-13 | 557.08 | 565.50 | 552.00 | 561.55 | +0.90% | 1,096,100 |
| 2025-08-12 | 547.94 | 562.74 | 547.09 | 556.55 | +1.94% | 766,000 |
| 2025-08-11 | 561.52 | 572.58 | 544.16 | 545.94 | -3.03% | 1,103,900 |
Most recent 250 sessions, newest first.
Seasonal returns
Best month historically: Aug (+8.04%). Worst month: May (-7.40%). Based on 5 years of daily data (2022–2026).
FAQ · from the current price data · as of 2026-08-07
Quick answers
What is Regeneron Pharmaceuticals Inc's (REGN) latest close?
784.36 on 2026-08-07, from the Closelook data lake's daily price record.
What is REGN's 52-week high and low?
821.11 high and 541.00 low over the trailing 52 weeks, as of 2026-08-07.
What is Regeneron Pharmaceuticals Inc's strongest and weakest month historically?
Historically, REGN's strongest calendar month has been Aug (average +8.04%) and its weakest May (average -7.40%), based on 5 years of daily data (2022–2026).
How many years of seasonality does this cover?
5 years (2022–2026), computed from 965 daily bars in the Closelook data lake.